Check how many files are extracted from the archive. Compare it with a number of files in corresponding webspace. Use command like below:

ls -lRa var/www/vhosts/1/109849/webspace/ |wc -l
7811

Analyze if it is worth to restore from the backup or it is better to leave existing content in webspace. In second case cancel the task and remove the backup from OA Customer Control Panel. If you decide to restore from archive use following procedure:

Create new tar-archive with the same name backup_data-14656.tar from files extracted at Step 2 above. Make sure backup contains valid paths to files: